The Rawlings 5150 EXOgrid Ph.D 30/21.5 (-8.5) 2 5/8" 2-Piece Hybrid Baseball Bat is a high-quality baseball bat designed for adult players. Made from durable metal alloy, this bat features a balanced swing weight for optimal performance on the field. With a 2 5/8 inch barrel diameter and a -8.5 length to weight ratio, this bat is perfect for serious baseball players looking to improve their game. The hybrid design and advanced technology of this Rawlings bat make it a top choice for competitive play.